Is ONE PIECE episode 1005 filler?
Canon No, episode 1005 of ONE PIECE is canon.
#1005
The Power of Ice Oni! A New Version of the Plague Rounds!
「氷鬼」の威力! 新たな疫災[エキサイト]弾
Aired 9 Jan 2022
Mochibayo compiled this list from MyAnimeList's labels, because MyAnimeList's episode data is not reaching us at the moment.